package cn.me.state;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @author jia
 * @date 2021/2/21
 */


public class TestSleep2 {

    public static void main(String[] args) throws InterruptedException {
        /*
        打印当前时间
         */

        Date startTime = new Date(System.currentTimeMillis());//获取当前时间
        while (true) {
            Thread.sleep(1000);
            System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
            startTime = new Date(System.currentTimeMillis());//更新时间
        }
//        try {
//            tendown();
//        } catch (InterruptedException e) {
//            e.printStackTrace();
//        }
    }

    /**
     * 模拟倒计时
     */
    public static void tendown() throws InterruptedException {
        int num = 10;
        while (true) {
            Thread.sleep(1000);
            System.out.println(num--);
            if (num <= 0) {
                break;
            }
        }
    }
}
